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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2014-03-31 01:29:04 +0400
committerSantosh Shilimkar <santosh.shilimkar@ti.com>2014-09-24 17:49:15 +0400
commit88139ed030583557751e279968e13e892ae10825 (patch)
tree0677ae76fa8daca0599669a748dabb3fc75c0332 /drivers/soc/ti/Kconfig
parent8172296d8717be1951da4bb4feb2700a60e8cdde (diff)
downloadlinux-88139ed030583557751e279968e13e892ae10825.tar.xz
soc: ti: add Keystone Navigator DMA support
The Keystone Navigator DMA driver sets up the dma channels and flows for the QMSS(Queue Manager SubSystem) who triggers the actual data movements across clients using destination queues. Every client modules like NETCP(Network Coprocessor), SRIO(Serial Rapid IO) and CRYPTO Engines has its own instance of packet dma hardware. QMSS has also an internal packet DMA module which is used as an infrastructure DMA with zero copy. Initially this driver was proposed as DMA engine driver but since the hardware is not typical DMA engine and hence doesn't comply with typical DMA engine driver needs, that approach was naked. Link to that discussion - https://lkml.org/lkml/2014/3/18/340 As aligned, now we pair the Navigator DMA with its companion Navigator QMSS subsystem driver. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kumar Gala <galak@codeaurora.org> Cc: Olof Johansson <olof@lixom.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Sandeep Nair <sandeep_n@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'drivers/soc/ti/Kconfig')
-rw-r--r--drivers/soc/ti/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soc/ti/Kconfig b/drivers/soc/ti/Kconfig
index f73896f762e8..7266b2165183 100644
--- a/drivers/soc/ti/Kconfig
+++ b/drivers/soc/ti/Kconfig
@@ -18,4 +18,14 @@ config KEYSTONE_NAVIGATOR_QMSS
If unsure, say N.
+config KEYSTONE_NAVIGATOR_DMA
+ tristate "TI Keystone Navigator Packet DMA support"
+ depends on ARCH_KEYSTONE
+ help
+ Say y tp enable support for the Keystone Navigator Packet DMA on
+ on Keystone family of devices. It sets up the dma channels for the
+ Queue Manager Sub System.
+
+ If unsure, say N.
+
endif # SOC_TI